2 papers
math.OC2026
Revisiting a Fast Newton Solver for a 2-D Spectral Estimation Problem: Computations with the Full Hessian
Ji Cheng, Bin Zhu
Spectral estimation plays a fundamental role in frequency-domain identification and related signal processing problems. This paper revisits a 2-D spectral estimation problem formul…
cs.LG2025
Practical multi-fidelity machine learning: fusion of deterministic and Bayesian models
Jiaxiang Yi, Ji Cheng, Miguel A. Bessa
Multi-fidelity machine learning methods address the accuracy-efficiency trade-off by integrating scarce, resource-intensive high-fidelity data with abundant but less accurate low-f…